| /* |
| * Realtek RTL2830 DVB-T demodulator driver |
| * |
| * Copyright (C) 2011 Antti Palosaari <crope@iki.fi> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| |
| /* |
| * Driver implements own I2C-adapter for tuner I2C access. That's since chip |
| * have unusual I2C-gate control which closes gate automatically after each |
| * I2C transfer. Using own I2C adapter we can workaround that. |
| */ |
| |
| #include "rtl2830_priv.h" |
| |
| /* write multiple hardware registers */ |
| static int rtl2830_wr(struct rtl2830_priv *priv, u8 reg, const u8 *val, int len) |
| { |
| int ret; |
| u8 buf[1+len]; |
| struct i2c_msg msg[1] = { |
| { |
| .addr = priv->cfg.i2c_addr, |
| .flags = 0, |
| .len = 1+len, |
| .buf = buf, |
| } |
| }; |
| |
| buf[0] = reg; |
| memcpy(&buf[1], val, len); |
| |
| ret = i2c_transfer(priv->i2c, msg, 1); |
| if (ret == 1) { |
| ret = 0; |
| } else { |
| dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \ |
| "len=%d\n", KBUILD_MODNAME, ret, reg, len); |
| ret = -EREMOTEIO; |
| } |
| return ret; |
| } |
| |
| /* read multiple hardware registers */ |
| static int rtl2830_rd(struct rtl2830_priv *priv, u8 reg, u8 *val, int len) |
| { |
| int ret; |
| struct i2c_msg msg[2] = { |
| { |
| .addr = priv->cfg.i2c_addr, |
| .flags = 0, |
| .len = 1, |
| .buf = ®, |
| }, { |
| .addr = priv->cfg.i2c_addr, |
| .flags = I2C_M_RD, |
| .len = len, |
| .buf = val, |
| } |
| }; |
| |
| ret = i2c_transfer(priv->i2c, msg, 2); |
| if (ret == 2) { |
| ret = 0; |
| } else { |
| dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \ |
| "len=%d\n", KBUILD_MODNAME, ret, reg, len); |
| ret = -EREMOTEIO; |
| } |
| return ret; |
| } |
| |
| /* write multiple registers */ |
| static int rtl2830_wr_regs(struct rtl2830_priv *priv, u16 reg, const u8 *val, |
| int len) |
| { |
| int ret; |
| u8 reg2 = (reg >> 0) & 0xff; |
| u8 page = (reg >> 8) & 0xff; |
| |
| /* switch bank if needed */ |
| if (page != priv->page) { |
| ret = rtl2830_wr(priv, 0x00, &page, 1); |
| if (ret) |
| return ret; |
| |
| priv->page = page; |
| } |
| |
| return rtl2830_wr(priv, reg2, val, len); |
| } |
| |
| /* read multiple registers */ |
| static int rtl2830_rd_regs(struct rtl2830_priv *priv, u16 reg, u8 *val, int len) |
| { |
| int ret; |
| u8 reg2 = (reg >> 0) & 0xff; |
| u8 page = (reg >> 8) & 0xff; |
| |
| /* switch bank if needed */ |
| if (page != priv->page) { |
| ret = rtl2830_wr(priv, 0x00, &page, 1); |
| if (ret) |
| return ret; |
| |
| priv->page = page; |
| } |
| |
| return rtl2830_rd(priv, reg2, val, len); |
| } |
| |
| /* read single register */ |
| static int rtl2830_rd_reg(struct rtl2830_priv *priv, u16 reg, u8 *val) |
| { |
| return rtl2830_rd_regs(priv, reg, val, 1); |
| } |
| |
| /* write single register with mask */ |
| int rtl2830_wr_reg_mask(struct rtl2830_priv *priv, u16 reg, u8 val, u8 mask) |
| { |
| int ret; |
| u8 tmp; |
| |
| /* no need for read if whole reg is written */ |
| if (mask != 0xff) { |
| ret = rtl2830_rd_regs(priv, reg, &tmp, 1); |
| if (ret) |
| return ret; |
| |
| val &= mask; |
| tmp &= ~mask; |
| val |= tmp; |
| } |
| |
| return rtl2830_wr_regs(priv, reg, &val, 1); |
| } |
| |
| /* read single register with mask */ |
| int rtl2830_rd_reg_mask(struct rtl2830_priv *priv, u16 reg, u8 *val, u8 mask) |
| { |
| int ret, i; |
| u8 tmp; |
| |
| ret = rtl2830_rd_regs(priv, reg, &tmp, 1); |
| if (ret) |
| return ret; |
| |
| tmp &= mask; |
| |
| /* find position of the first bit */ |
| for (i = 0; i < 8; i++) { |
| if ((mask >> i) & 0x01) |
| break; |
| } |
| *val = tmp >> i; |
| |
| return 0; |
| } |
| |
| static int rtl2830_init(struct dvb_frontend *fe) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| int ret, i; |
| struct rtl2830_reg_val_mask tab[] = { |
| { 0x00d, 0x01, 0x03 }, |
| { 0x00d, 0x10, 0x10 }, |
| { 0x104, 0x00, 0x1e }, |
| { 0x105, 0x80, 0x80 }, |
| { 0x110, 0x02, 0x03 }, |
| { 0x110, 0x08, 0x0c }, |
| { 0x17b, 0x00, 0x40 }, |
| { 0x17d, 0x05, 0x0f }, |
| { 0x17d, 0x50, 0xf0 }, |
| { 0x18c, 0x08, 0x0f }, |
| { 0x18d, 0x00, 0xc0 }, |
| { 0x188, 0x05, 0x0f }, |
| { 0x189, 0x00, 0xfc }, |
| { 0x2d5, 0x02, 0x02 }, |
| { 0x2f1, 0x02, 0x06 }, |
| { 0x2f1, 0x20, 0xf8 }, |
| { 0x16d, 0x00, 0x01 }, |
| { 0x1a6, 0x00, 0x80 }, |
| { 0x106, priv->cfg.vtop, 0x3f }, |
| { 0x107, priv->cfg.krf, 0x3f }, |
| { 0x112, 0x28, 0xff }, |
| { 0x103, priv->cfg.agc_targ_val, 0xff }, |
| { 0x00a, 0x02, 0x07 }, |
| { 0x140, 0x0c, 0x3c }, |
| { 0x140, 0x40, 0xc0 }, |
| { 0x15b, 0x05, 0x07 }, |
| { 0x15b, 0x28, 0x38 }, |
| { 0x15c, 0x05, 0x07 }, |
| { 0x15c, 0x28, 0x38 }, |
| { 0x115, priv->cfg.spec_inv, 0x01 }, |
| { 0x16f, 0x01, 0x07 }, |
| { 0x170, 0x18, 0x38 }, |
| { 0x172, 0x0f, 0x0f }, |
| { 0x173, 0x08, 0x38 }, |
| { 0x175, 0x01, 0x07 }, |
| { 0x176, 0x00, 0xc0 }, |
| }; |
| |
| for (i = 0; i < ARRAY_SIZE(tab); i++) { |
| ret = rtl2830_wr_reg_mask(priv, tab[i].reg, tab[i].val, |
| tab[i].mask); |
| if (ret) |
| goto err; |
| } |
| |
| ret = rtl2830_wr_regs(priv, 0x18f, "\x28\x00", 2); |
| if (ret) |
| goto err; |
| |
| ret = rtl2830_wr_regs(priv, 0x195, |
| "\x04\x06\x0a\x12\x0a\x12\x1e\x28", 8); |
| if (ret) |
| goto err; |
| |
| /* TODO: spec init */ |
| |
| /* soft reset */ |
| ret = rtl2830_wr_reg_mask(priv, 0x101, 0x04, 0x04); |
| if (ret) |
| goto err; |
| |
| ret = rtl2830_wr_reg_mask(priv, 0x101, 0x00, 0x04); |
| if (ret) |
| goto err; |
| |
| priv->sleeping = false; |
| |
| return ret; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static int rtl2830_sleep(struct dvb_frontend *fe) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| priv->sleeping = true; |
| return 0; |
| } |
| |
| int rtl2830_get_tune_settings(struct dvb_frontend *fe, |
| struct dvb_frontend_tune_settings *s) |
| { |
| s->min_delay_ms = 500; |
| s->step_size = fe->ops.info.frequency_stepsize * 2; |
| s->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1; |
| |
| return 0; |
| } |
| |
| static int rtl2830_set_frontend(struct dvb_frontend *fe) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| int ret, i; |
| u64 num; |
| u8 buf[3], tmp; |
| u32 if_ctl, if_frequency; |
| static const u8 bw_params1[3][34] = { |
| { |
| 0x1f, 0xf0, 0x1f, 0xf0, 0x1f, 0xfa, 0x00, 0x17, 0x00, 0x41, |
| 0x00, 0x64, 0x00, 0x67, 0x00, 0x38, 0x1f, 0xde, 0x1f, 0x7a, |
| 0x1f, 0x47, 0x1f, 0x7c, 0x00, 0x30, 0x01, 0x4b, 0x02, 0x82, |
| 0x03, 0x73, 0x03, 0xcf, /* 6 MHz */ |
| }, { |
| 0x1f, 0xfa, 0x1f, 0xda, 0x1f, 0xc1, 0x1f, 0xb3, 0x1f, 0xca, |
| 0x00, 0x07, 0x00, 0x4d, 0x00, 0x6d, 0x00, 0x40, 0x1f, 0xca, |
| 0x1f, 0x4d, 0x1f, 0x2a, 0x1f, 0xb2, 0x00, 0xec, 0x02, 0x7e, |
| 0x03, 0xd0, 0x04, 0x53, /* 7 MHz */ |
| }, { |
| 0x00, 0x10, 0x00, 0x0e, 0x1f, 0xf7, 0x1f, 0xc9, 0x1f, 0xa0, |
| 0x1f, 0xa6, 0x1f, 0xec, 0x00, 0x4e, 0x00, 0x7d, 0x00, 0x3a, |
| 0x1f, 0x98, 0x1f, 0x10, 0x1f, 0x40, 0x00, 0x75, 0x02, 0x5f, |
| 0x04, 0x24, 0x04, 0xdb, /* 8 MHz */ |
| }, |
| }; |
| static const u8 bw_params2[3][6] = { |
| {0xc3, 0x0c, 0x44, 0x33, 0x33, 0x30}, /* 6 MHz */ |
| {0xb8, 0xe3, 0x93, 0x99, 0x99, 0x98}, /* 7 MHz */ |
| {0xae, 0xba, 0xf3, 0x26, 0x66, 0x64}, /* 8 MHz */ |
| }; |
| |
| dev_dbg(&priv->i2c->dev, |
| "%s: frequency=%d bandwidth_hz=%d inversion=%d\n", |
| __func__, c->frequency, c->bandwidth_hz, c->inversion); |
| |
| /* program tuner */ |
| if (fe->ops.tuner_ops.set_params) |
| fe->ops.tuner_ops.set_params(fe); |
| |
| switch (c->bandwidth_hz) { |
| case 6000000: |
| i = 0; |
| break; |
| case 7000000: |
| i = 1; |
| break; |
| case 8000000: |
| i = 2; |
| break; |
| default: |
| dev_dbg(&priv->i2c->dev, "%s: invalid bandwidth\n", __func__); |
| return -EINVAL; |
| } |
| |
| ret = rtl2830_wr_reg_mask(priv, 0x008, i << 1, 0x06); |
| if (ret) |
| goto err; |
| |
| /* program if frequency */ |
| if (fe->ops.tuner_ops.get_if_frequency) |
| ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency); |
| else |
| ret = -EINVAL; |
| |
| if (ret < 0) |
| goto err; |
| |
| num = if_frequency % priv->cfg.xtal; |
| num *= 0x400000; |
| num = div_u64(num, priv->cfg.xtal); |
| num = -num; |
| if_ctl = num & 0x3fffff; |
| dev_dbg(&priv->i2c->dev, "%s: if_frequency=%d if_ctl=%08x\n", |
| __func__, if_frequency, if_ctl); |
| |
| ret = rtl2830_rd_reg_mask(priv, 0x119, &tmp, 0xc0); /* b[7:6] */ |
| if (ret) |
| goto err; |
| |
| buf[0] = tmp << 6; |
| buf[0] |= (if_ctl >> 16) & 0x3f; |
| buf[1] = (if_ctl >> 8) & 0xff; |
| buf[2] = (if_ctl >> 0) & 0xff; |
| |
| ret = rtl2830_wr_regs(priv, 0x119, buf, 3); |
| if (ret) |
| goto err; |
| |
| /* 1/2 split I2C write */ |
| ret = rtl2830_wr_regs(priv, 0x11c, &bw_params1[i][0], 17); |
| if (ret) |
| goto err; |
| |
| /* 2/2 split I2C write */ |
| ret = rtl2830_wr_regs(priv, 0x12d, &bw_params1[i][17], 17); |
| if (ret) |
| goto err; |
| |
| ret = rtl2830_wr_regs(priv, 0x19d, bw_params2[i], 6); |
| if (ret) |
| goto err; |
| |
| return ret; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static int rtl2830_get_frontend(struct dvb_frontend *fe) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
| int ret; |
| u8 buf[3]; |
| |
| if (priv->sleeping) |
| return 0; |
| |
| ret = rtl2830_rd_regs(priv, 0x33c, buf, 2); |
| if (ret) |
| goto err; |
| |
| ret = rtl2830_rd_reg(priv, 0x351, &buf[2]); |
| if (ret) |
| goto err; |
| |
| dev_dbg(&priv->i2c->dev, "%s: TPS=%*ph\n", __func__, 3, buf); |
| |
| switch ((buf[0] >> 2) & 3) { |
| case 0: |
| c->modulation = QPSK; |
| break; |
| case 1: |
| c->modulation = QAM_16; |
| break; |
| case 2: |
| c->modulation = QAM_64; |
| break; |
| } |
| |
| switch ((buf[2] >> 2) & 1) { |
| case 0: |
| c->transmission_mode = TRANSMISSION_MODE_2K; |
| break; |
| case 1: |
| c->transmission_mode = TRANSMISSION_MODE_8K; |
| } |
| |
| switch ((buf[2] >> 0) & 3) { |
| case 0: |
| c->guard_interval = GUARD_INTERVAL_1_32; |
| break; |
| case 1: |
| c->guard_interval = GUARD_INTERVAL_1_16; |
| break; |
| case 2: |
| c->guard_interval = GUARD_INTERVAL_1_8; |
| break; |
| case 3: |
| c->guard_interval = GUARD_INTERVAL_1_4; |
| break; |
| } |
| |
| switch ((buf[0] >> 4) & 7) { |
| case 0: |
| c->hierarchy = HIERARCHY_NONE; |
| break; |
| case 1: |
| c->hierarchy = HIERARCHY_1; |
| break; |
| case 2: |
| c->hierarchy = HIERARCHY_2; |
| break; |
| case 3: |
| c->hierarchy = HIERARCHY_4; |
| break; |
| } |
| |
| switch ((buf[1] >> 3) & 7) { |
| case 0: |
| c->code_rate_HP = FEC_1_2; |
| break; |
| case 1: |
| c->code_rate_HP = FEC_2_3; |
| break; |
| case 2: |
| c->code_rate_HP = FEC_3_4; |
| break; |
| case 3: |
| c->code_rate_HP = FEC_5_6; |
| break; |
| case 4: |
| c->code_rate_HP = FEC_7_8; |
| break; |
| } |
| |
| switch ((buf[1] >> 0) & 7) { |
| case 0: |
| c->code_rate_LP = FEC_1_2; |
| break; |
| case 1: |
| c->code_rate_LP = FEC_2_3; |
| break; |
| case 2: |
| c->code_rate_LP = FEC_3_4; |
| break; |
| case 3: |
| c->code_rate_LP = FEC_5_6; |
| break; |
| case 4: |
| c->code_rate_LP = FEC_7_8; |
| break; |
| } |
| |
| return 0; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static int rtl2830_read_status(struct dvb_frontend *fe, fe_status_t *status) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| int ret; |
| u8 tmp; |
| *status = 0; |
| |
| if (priv->sleeping) |
| return 0; |
| |
| ret = rtl2830_rd_reg_mask(priv, 0x351, &tmp, 0x78); /* [6:3] */ |
| if (ret) |
| goto err; |
| |
| if (tmp == 11) { |
| *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
| FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; |
| } else if (tmp == 10) { |
| *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | |
| FE_HAS_VITERBI; |
| } |
| |
| return ret; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| int ret, hierarchy, constellation; |
| u8 buf[2], tmp; |
| u16 tmp16; |
| #define CONSTELLATION_NUM 3 |
| #define HIERARCHY_NUM 4 |
| static const u32 snr_constant[CONSTELLATION_NUM][HIERARCHY_NUM] = { |
| { 70705899, 70705899, 70705899, 70705899 }, |
| { 82433173, 82433173, 87483115, 94445660 }, |
| { 92888734, 92888734, 95487525, 99770748 }, |
| }; |
| |
| if (priv->sleeping) |
| return 0; |
| |
| /* reports SNR in resolution of 0.1 dB */ |
| |
| ret = rtl2830_rd_reg(priv, 0x33c, &tmp); |
| if (ret) |
| goto err; |
| |
| constellation = (tmp >> 2) & 0x03; /* [3:2] */ |
| if (constellation > CONSTELLATION_NUM - 1) |
| goto err; |
| |
| hierarchy = (tmp >> 4) & 0x07; /* [6:4] */ |
| if (hierarchy > HIERARCHY_NUM - 1) |
| goto err; |
| |
| ret = rtl2830_rd_regs(priv, 0x40c, buf, 2); |
| if (ret) |
| goto err; |
| |
| tmp16 = buf[0] << 8 | buf[1]; |
| |
| if (tmp16) |
| *snr = (snr_constant[constellation][hierarchy] - |
| intlog10(tmp16)) / ((1 << 24) / 100); |
| else |
| *snr = 0; |
| |
| return 0; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| int ret; |
| u8 buf[2]; |
| |
| if (priv->sleeping) |
| return 0; |
| |
| ret = rtl2830_rd_regs(priv, 0x34e, buf, 2); |
| if (ret) |
| goto err; |
| |
| *ber = buf[0] << 8 | buf[1]; |
| |
| return 0; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static int rtl2830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) |
| { |
| *ucblocks = 0; |
| return 0; |
| } |
| |
| static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| int ret; |
| u8 buf[2]; |
| u16 if_agc_raw, if_agc; |
| |
| if (priv->sleeping) |
| return 0; |
| |
| ret = rtl2830_rd_regs(priv, 0x359, buf, 2); |
| if (ret) |
| goto err; |
| |
| if_agc_raw = (buf[0] << 8 | buf[1]) & 0x3fff; |
| |
| if (if_agc_raw & (1 << 9)) |
| if_agc = -(~(if_agc_raw - 1) & 0x1ff); |
| else |
| if_agc = if_agc_raw; |
| |
| *strength = (u8) (55 - if_agc / 182); |
| *strength |= *strength << 8; |
| |
| return 0; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static struct dvb_frontend_ops rtl2830_ops; |
| |
| static u32 rtl2830_tuner_i2c_func(struct i2c_adapter *adapter) |
| { |
| return I2C_FUNC_I2C; |
| } |
| |
| static int rtl2830_tuner_i2c_xfer(struct i2c_adapter *i2c_adap, |
| struct i2c_msg msg[], int num) |
| { |
| struct rtl2830_priv *priv = i2c_get_adapdata(i2c_adap); |
| int ret; |
| |
| /* open i2c-gate */ |
| ret = rtl2830_wr_reg_mask(priv, 0x101, 0x08, 0x08); |
| if (ret) |
| goto err; |
| |
| ret = i2c_transfer(priv->i2c, msg, num); |
| if (ret < 0) |
| dev_warn(&priv->i2c->dev, "%s: tuner i2c failed=%d\n", |
| KBUILD_MODNAME, ret); |
| |
| return ret; |
| err: |
| dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret); |
| return ret; |
| } |
| |
| static struct i2c_algorithm rtl2830_tuner_i2c_algo = { |
| .master_xfer = rtl2830_tuner_i2c_xfer, |
| .functionality = rtl2830_tuner_i2c_func, |
| }; |
| |
| struct i2c_adapter *rtl2830_get_tuner_i2c_adapter(struct dvb_frontend *fe) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| return &priv->tuner_i2c_adapter; |
| } |
| EXPORT_SYMBOL(rtl2830_get_tuner_i2c_adapter); |
| |
| static void rtl2830_release(struct dvb_frontend *fe) |
| { |
| struct rtl2830_priv *priv = fe->demodulator_priv; |
| |
| i2c_del_adapter(&priv->tuner_i2c_adapter); |
| kfree(priv); |
| } |
| |
| struct dvb_frontend *rtl2830_attach(const struct rtl2830_config *cfg, |
| struct i2c_adapter *i2c) |
| { |
| struct rtl2830_priv *priv = NULL; |
| int ret = 0; |
| u8 tmp; |
| |
| /* allocate memory for the internal state */ |
| priv = kzalloc(sizeof(struct rtl2830_priv), GFP_KERNEL); |
| if (priv == NULL) |
| goto err; |
| |
| /* setup the priv */ |
| priv->i2c = i2c; |
| memcpy(&priv->cfg, cfg, sizeof(struct rtl2830_config)); |
| |
| /* check if the demod is there */ |
| ret = rtl2830_rd_reg(priv, 0x000, &tmp); |
| if (ret) |
| goto err; |
| |
| /* create dvb_frontend */ |
| memcpy(&priv->fe.ops, &rtl2830_ops, sizeof(struct dvb_frontend_ops)); |
| priv->fe.demodulator_priv = priv; |
| |
| /* create tuner i2c adapter */ |
| strlcpy(priv->tuner_i2c_adapter.name, "RTL2830 tuner I2C adapter", |
| sizeof(priv->tuner_i2c_adapter.name)); |
| priv->tuner_i2c_adapter.algo = &rtl2830_tuner_i2c_algo; |
| priv->tuner_i2c_adapter.algo_data = NULL; |
| i2c_set_adapdata(&priv->tuner_i2c_adapter, priv); |
| if (i2c_add_adapter(&priv->tuner_i2c_adapter) < 0) { |
| dev_err(&i2c->dev, |
| "%s: tuner i2c bus could not be initialized\n", |
| KBUILD_MODNAME); |
| goto err; |
| } |
| |
| priv->sleeping = true; |
| |
| return &priv->fe; |
| err: |
| dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret); |
| kfree(priv); |
| return NULL; |
| } |
| EXPORT_SYMBOL(rtl2830_attach); |
| |
| static struct dvb_frontend_ops rtl2830_ops = { |
| .delsys = { SYS_DVBT }, |
| .info = { |
| .name = "Realtek RTL2830 (DVB-T)", |
| .caps = FE_CAN_FEC_1_2 | |
| FE_CAN_FEC_2_3 | |
| FE_CAN_FEC_3_4 | |
| FE_CAN_FEC_5_6 | |
| FE_CAN_FEC_7_8 | |
| FE_CAN_FEC_AUTO | |
| FE_CAN_QPSK | |
| FE_CAN_QAM_16 | |
| FE_CAN_QAM_64 | |
| FE_CAN_QAM_AUTO | |
| FE_CAN_TRANSMISSION_MODE_AUTO | |
| FE_CAN_GUARD_INTERVAL_AUTO | |
| FE_CAN_HIERARCHY_AUTO | |
| FE_CAN_RECOVER | |
| FE_CAN_MUTE_TS |
| }, |
| |
| .release = rtl2830_release, |
| |
| .init = rtl2830_init, |
| .sleep = rtl2830_sleep, |
| |
| .get_tune_settings = rtl2830_get_tune_settings, |
| |
| .set_frontend = rtl2830_set_frontend, |
| .get_frontend = rtl2830_get_frontend, |
| |
| .read_status = rtl2830_read_status, |
| .read_snr = rtl2830_read_snr, |
| .read_ber = rtl2830_read_ber, |
| .read_ucblocks = rtl2830_read_ucblocks, |
| .read_signal_strength = rtl2830_read_signal_strength, |
| }; |
| |
| MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| MODULE_DESCRIPTION("Realtek RTL2830 DVB-T demodulator driver"); |
| MODULE_LICENSE("GPL"); |